June weather forecastVandalia, IL
June
Weather in June
The first month of the summer, June, is still a warm month in Vandalia, Illinois, with an average temperature fluctuating between 82.4°F (28°C) and 65.7°F (18.7°C).Temperature
As Vandalia welcomes June, the average high-temperature sees a modest rise, transitioning from 73.6°F (23.1°C) in May to a still warm 82.4°F (28°C). Vandalia, during the month of June, experiences an average low-temperature of 65.7°F (18.7°C).Heat index
The heat index value for June is appraised at a hot 89.6°F (32°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.Understand that the heat index values take into account shaded locations and mild winds. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', comes about by integrating the temperature readings with the humidity levels. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Humidity
The average relative humidity in June is 78%.Rainfall
June is the month with the most rainfall in Vandalia. Rain falls for 17.2 days and accumulates 4.57" (116mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The month with the longest days is June, with an average of 14h and 54min of daylight.On the first day of June, sunrise is at 5:32 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:25 pm CDT.
Sunshine
June has the most sunshine of the year, with an average of 10.3h of sunshine.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: During June, 6 as the daily maximum UV index converts into the following advice:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Vandalia, IL
- Average high temperature in June: 82.4°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in June: 65.7°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in June
Vandalia, IL
- Average pressure in June: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in June
Vandalia, IL
- Average wind speed in June: 7mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in June
Vandalia, IL
- Average humidity in June: 78%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in June
Vandalia, IL
- Average rainfall in June: 4.57"
The wettest month (with the highest rainfall) is June (4.57").
The driest month (with the least rainfall) is February (2.01").
Average rainfall days in June
Vandalia, IL
- Average rainfall days in June: 17.2 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in June
Vandalia, IL
- Average snowfall in June: 0"
The month with the highest snowfall is December (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in June
Vandalia, IL
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in June /
Average sunshine in June
Vandalia, IL
- Average daylight in June: 14h and 54min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in June: 10h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in June
Vandalia, IL
- Average sunshine days in June: 9.3 days
The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is July (8.6 days).
Average UV index in June
Vandalia, IL
- Average UV index in June: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in June
Vandalia, IL
- Average cloud cover in June: 30
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June, July and September (Cloud cover 30).
Average visibility in June
Vandalia, IL
- Average visibility in June: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
